KR20030061831A - Position information identifier providing system, and position information identifier transmitting method and device - Google Patents

Abstract

An object of the present invention is to provide a system supporting an information providing service performed by using a location information identifier. In the present invention, the information providing means 20 for providing only the information using the location information identifier to the receiving device 30 having the database 37 of the location information identifier and the database 38 of the digital map, and the information providing. Apart from the means, it constitutes a location information identifier providing system comprising location information identifier information providing means 10 for providing only the information of the updated location information identifier to the receiving device. The location information identifier may be used to supplement a system for providing information. The map data production company can reduce the burden of management and after-service associated with updating the location information identifier. In addition, it is not necessary to duplicate the old and new location information identifiers in the VICS information.

Description

POSITION INFORMATION IDENTIFIER PROVIDING SYSTEM, AND POSITION INFORMATION IDENTIFIER TRANSMITTING METHOD AND DEVICE}

In recent years, vehicles equipped with navigation vehicle payloads have increased rapidly. The navigational vehicle has a digital map database and receives VICS (Vehicle Information Communication System) information that provides congestion or accident information through FM multicasting or radio / optical beacons. A route search is performed by displaying on a map and adding these information to conditions.

Although the database of digital maps is made by various companies in Japan, as a fate of scale maps, an error exists in this map data, and this error differs according to the digital map of each company.

For example, when the accident location is transmitted from traffic information, the longitude and latitude data of the location is presented alone, and the onboard vehicle detects the location on the different roads according to the type of digital map database held by the onboard vehicle. It may be identified as.

In order to avoid such inaccuracy of information transfer, the road location is designated in the VICS information by using a location information identifier such as a node number defined in a node such as an intersection or a link number defined in a link indicating roads between the nodes. On the other hand, the digital map database of each company stores each intersection or road in correspondence with the node number and the link number. Therefore, the road position indicated by the VICS information can be uniquely identified.

The location information identifier is set based on a predetermined rule. As shown in Fig. 14A, each node is set with a node number that uniquely displays the node, and the road between the node (node number 1111; a) and the node (node number 3333; b) The link number of c) is set to 11113333 by enumerating the larger node number 3333 after the smaller node number 1111. In addition, the curve of the road is approximated by a broken line, and the vertex of the broken line is set as an interpolation point, so that the node (a) having a small node number is defined as ① and the node b as the final interpolated point. Interpolation points are numbered as they are.

In addition, as shown in Fig. 14B, when a new node (node number 4444; d) is set due to the establishment of a road or the like, instead of the original link number 11113333, between the node a and the node d, The link number 11114444 for the link f and the link number 33334444 for the link e between the nodes d and b are newly set.

The update information of the location information identifier is recorded on the recording medium and distributed from the distribution source to each map data production company, and each company makes modifications to its map data based on the updated location information identifier. Moreover, as an after-sales service for the already-sold map data, there may be a case where correction of the map data from a customer is made.

Further, in the VICS information, even after the update of the location information identifier is performed, in consideration of the on-vehicle device having the digital map data before the update, traffic information is provided by using the location information identifier after the update and the location information identifier before the update for a predetermined period. .

However, since roads are newly established and changed in the future, and updating of the location information identifier is repeated, the cost for the map data production company to invest in product management and after-sales service is very large.

In addition, since the VICS information needs to transmit the old and new location information identifiers redundantly, the tangible and intangible forms of maintenance of the information providing system using the location information identifiers, such as the economic burden required for creating the data and the inefficiency of data transmission. The cost of

SUMMARY OF THE INVENTION The present invention solves this conventional problem, and aims to provide a system supporting an information providing service performed by using the location information identifier, and to provide a method and apparatus for delivering the location information identifier under the system. do.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for providing update information of a location information identifier for defining a road location to a vehicle mounter, etc., a method of delivering the location information identifier in that case, and an apparatus for performing the same. It aims to support the informational system.

1 is a block diagram showing the configuration of a system for providing location information identifiers in an embodiment of the present invention.

2 is a diagram showing a data configuration of location information identifier information provided in the system of the embodiment.

3 is a diagram showing a data structure of additional information provided in the system of the embodiment;

4 is a diagram showing a data structure of accident information provided as traffic information in the system of the embodiment;

5 is a diagram showing a data structure of congestion information provided as traffic information in the system of the embodiment;

6 is a flow chart showing operation of each part in the system of the embodiment.

7 shows a first application form of the system of the embodiment.

8 shows a second application form of the system of the embodiment;

9 shows a third application form of the system of the embodiment;

10 is an example of location information identifier in the system of the embodiment.

11 is another example of a location information identifier in the system of the embodiment;

12 is another example of location information identifier in the system of the embodiment;

Figure 13 is an application example other than transmission of updated location information identifier in the system of the embodiment.

14 is a diagram illustrating updating of a location information identifier.

In the drawing, reference numeral 10 denotes a location information identifier transmitter, 11 a location information identifier database A, 12 a digital map database A, 13 a location information identifier transmission information generator, 14 a location information identifier information transmitter, and 20 traffic information. Providing media, 30 is a receiving apparatus, 31 is location information identifier information receiving unit, 32 is information reflecting determining unit, 33 is map matching unit, 34, 35, 36 is traffic information receiving unit, 37 is location information identifier database B, 38 is Digital map database B, 39 is a traffic information generation position calculation part, 40 is a digital map display part.

Therefore, in the present invention, the information providing means for providing only the information using the location information identifier to the receiving device having a database of the location information identifier and a database of the digital map, and to the receiving device separately from the information providing means. And a location information identifier providing system comprising location information identifier information providing means for providing only the information of the updated location information identifier.

A delivery method for delivering updated information of the location information identifier to a receiving device having a database of location information identifiers and a database of digital maps, comprising: information of the location information identifiers and the location information identifiers; Coordinate string information of a node and an interpolation point is transmitted to a receiving device, and the receiving device performs map matching to determine a location on a digital map corresponding to the location information identifier.

A location information identifier transmitter is also provided for generating and transmitting location information identifier transmission information including information of the location information identifier and coordinate string information of nodes and interpolation points constituting the location information identifier.

A receiving device comprising a database of location information identifiers and a database of digital maps, for receiving information using the location information identifiers, and displaying a location on a digital map corresponding to the location information identifiers. Receiving location information identifier information including location information identifier information and coordinate string information of nodes and interpolation points constituting the location information identifier, storing the location information identifier in the database of location information identifiers, and Map matching is performed using coordinate string information to determine the position on the digital map of the location information identifier.

In the system of the present invention, a system for providing information using location information identifiers can be supplemented. The map data production company can reduce the burden of management and after-service associated with updating the location information identifier. In addition, it is not necessary to duplicate the old and new location information identifiers in the VICS information.

In addition, by adopting the location information identifier delivery method of the present invention, even when there is a difference in the digital map data, the reception side device can reliably perform correspondence between the location information identifier and the position on the digital map.

As shown in FIG. 1, the system of the embodiment of the present invention includes a media 20 for providing various traffic information using the location information identifier, a location information identifier transmitter 10 for providing information of the location information identifier itself, And a receiving side device 30 which receives the traffic information from the media 20 and receives the information of the location information identifier from the location information identifier transmitting device 10.

The location information identifier transmitting device 10 includes a database A 11 of a new location information identifier, a database A 12 of a digital map, a location information identifier transmission information generation unit 13 for generating transmission information of a location information identifier, and And a location information identifier information transmitter 14 for transmitting the generated information.

In addition, the receiving device 30 is a location information identifier information receiving unit for receiving information of the location information identifier from the database B 37 of the location information identifier, the database B 38 of the digital map, and the location information identifier transmitter 10. (31), an information reflection determination unit (32) for determining a location information identifier required by this apparatus, a map matching unit (33) for performing map matching to determine a location on a digital map of the location information identifier, and from each media Traffic information receiving unit (34, 35, 36) for receiving traffic information, traffic information generation position calculating unit (39) for calculating a position where an accident or congestion occurred from the received information, and map on map The digital map display unit 40 which displays a generation position is provided.

The receiving side device 30 is mounted on a vehicle, and the traffic information is stored in, for example, a traffic information providing channel (A channel) of terrestrial digital broadcasting as shown in FIG. 7 or a medium such as a beacon as shown in FIG. Provided by The information of the location information identifier is provided by, for example, an information providing channel (B channel) of the location information identifier of the terrestrial digital broadcast.

6 shows an operation procedure of the location information identifier transmitter 10, the traffic information transmitter 20, and the receiver side apparatus 30.

In the position information identifier transmitter 10, the following operation is performed.

Step 11: The location information identifier transmission information generation unit 13 selects a new location information identifier (for example, link data) from the location information identifier database A 11, or selects a location of the receiving device or a location designated by the receiving device. Select the information of the location information identifier to include,

Step 12: Coordinate values (longitude and latitude) of nodes and interpolation points constituting the location information identifier are obtained from the digital map database A 12, and a coordinate string is generated.

Step 13: Further, additional information indicative of the node or link attribute between the nodes is obtained from the digital map database A (12). The additional information includes information such as a road type code, a road number, a toll road code, the number of connection links at an intersection node, and the connection link angle of each connection link.

Step 14: When the array shape of the interpolation point can be approximated by a function, it is expressed as a function to compress the coordinate column data.

Step 15: When the array shape of the interpolation points is a straight line, the interpolation points are reduced to compress the coordinate string data.

Step 16: The coordinate values of the first node of the coordinate string are expressed in absolute coordinates, and the coordinate values of the second and subsequent nodes (or interpolation points) are coordinate values of the first node or the preceding node (or interpolation) in order to compress the data amount. The difference from the coordinate value of point) is taken and displayed in relative coordinates.

Step 17: Change the information of the location information identifier (link number), the information of the coordinate string, and the additional information into the transmission format.

Step 18: The location information identifier information transmitter 14 transmits this data.

2 shows an example of the data configuration of the location information identifier information, and FIG. 3 shows an example of the road additional information.

The following operation is performed in the receiving side device 30 having received the location information identifier information and the road additional information.

Step 31: The location information identifier information receiver 31 receives data.

Step 32: The information reflection determination unit 32 compares the position information identifier stored in the position information identifier database B 37 with one that is to be updated, and transmits the position information identifier to the position information identifier database B 37. To be stored.

In this case, when the location information identifier does not exist in the location information identifier database or when the received information is newer than the data held in the own device, the location information identifier is stored in the location information identifier database B 37. You may.

Step 33: The map matching unit 33 performs map matching with the data of the digital map database B 38 using data of the coordinate string included in the location information identifier information, and determines the location on the digital map of the location information identifier. . At this time, the candidate point is reduced by referring to the additional information, the orientation information of the node included in the location information identifier information, the altitude information, and the like.

Step 34: The information reflection determination unit 32 associates the previously stored location information identifier with the position on the digital map determined by the map matching unit.

In this way, the data of the new location information identifier is stored in the location information identifier database B 37.

The traffic information transmitter 20 provides traffic information in the following order.

Step 21: When the location of the event of congestion or accident is entered,

Step 22: The location information identifier (link number) of the road where the casualties have occurred and the relative distance (relative location) from the node to the casualty location are obtained.

Step 23: change these location information into a transmission format,

Step 24: Send as mapping information.

FIG. 4 shows the event information at the time of an accident, and FIG. 5 shows the event information at the time of congestion.

The receiving side apparatus 30 which received the mapping information performs the following operation.

Step 41: The traffic information receivers 34 to 36 receive the event information.

Step 42: The traffic information generation position calculation unit 39 uses the data of the location information identifier database B 37 and the digital map database B 38 based on the location information identifier included in the event information, and the event occurrence location. A road on the digital map including a is specified, and a mapping occurrence position on the road is specified based on the relative position included in the mapping information.

Step 43: The event occurrence position is displayed on the map displayed on the digital map display 40.

As described above, in this system, the position information identifier stored in the receiving side apparatus is automatically updated with the information from the position information identifier transmitting apparatus 10, and the latest position information identifier is held in the receiving side apparatus. For this reason, the traffic information transmission device can provide traffic information using only the latest location information identifier.

In addition, as shown in Fig. 9, the system may be configured to receive the information of the location information identifier via a mobile phone from a media separate from the media providing the traffic information. In this case, the receiving side apparatus requests the location information identifier via the cellular phone when the traffic information includes the location information identifier not stored in its location information identifier database B 37. Upon receiving this, the location information identifier providing medium provides the requested location information identifier to the receiving device.

Here, for example of the location information identifier,

(1) "Link identifier 1" (FIG. 10) which indicates road section, direction by numbering "link" which links between intersections in each direction by one direction, and is currently operated in main highways of Japan And VICS links.

(2) "Link identifier 2" which is defined without a direction and adds a direction to dynamic information (FIG. 11).

(3) "Node identifier" which numbers road intersection itself, and displays road section with two numbers (Fig. 12)

Etc.

10 to 12, when "link identifier 1" is used (FIG. 10), the location information identifier is 214, and the congestion section is 250m to 450m. When the same information is used using "link identifier 2" (FIG. 11), the position information identifier is 54, the direction is reverse, and the congestion section is 250 m to 450 m.

In addition, when the same information is shown using "node identifier" (FIG. 12), it becomes "a location information identifier from 312 to 355 and a congestion section from 250m to 450m".

Moreover, FIG. 13 shows an application example of the location information identifier other than the update transmission.

In this example, initially, only the digital map is provided, and information necessary for the corresponding area (moreover, only the link providing the information may be extracted) is transmitted as necessary. After that, if the location changes by moving, the location information identifier is updated from time to time according to the location.

For example, at the time of departure, a vehicle having only digital map information departs from Tokyo without a location information identifier, and receives a location identifier of Tokyo while traveling in Tokyo, Receive information. In addition, while the car is moving and traveling in Kanagawa Prefecture, Japan receives a location identifier of Kanagawa Prefecture, Japan, and receives traffic information in Kanagawa Prefecture, Japan.

While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention.

This application is based on the JP Patent application (patent application 2000-375321) of an application on December 08, 2000, The content is taken in here as a reference.

As apparent from the above description, the system of the present invention can supplement the system for providing information by using the location information identifier, and can reduce the burden imposed on the map data production company or the like to maintain the system.

In addition, since the old and new location information identifiers do not need to be duplicated and transmitted in the VICS information to be provided, the data transmission can be made more efficient.

In addition, by adopting the location information identifier delivery method of the present invention, even when there is a difference in the digital map data, the reception side device can reliably perform correspondence between the location information identifier and the position on the digital map.

Claims (12)

An information providing means for providing only information using the location information identifier to a receiving device including a database of a location information identifier and a database of a digital map, and an updated location information identifier for the receiving device separately from the information providing means. And a location information identifier information providing means for providing only information. Information providing means for providing only information using a location information identifier to a receiving device including a digital map database, and location information identifier information providing means for providing only the information of the location information identifier to the receiving device separately from the information providing means. Location information identifier providing system comprising a. An information providing means for providing only information using the location information identifier to a receiving apparatus including at least one of a database of a location information identifier and a database of a digital map, and an updated position in the receiving apparatus separately from the information providing means And location information identifier information providing means for providing only information of the information identifier. 4. The location information identifier providing system according to any one of claims 1 to 3, wherein the information of the location information identifier is information of a location information identifier including a location of the receiver or a location designated by the receiver. 4. The position information identifier providing system according to any one of claims 1 to 3, wherein said information providing means and said position information identifier information providing means provide respective information using different channels of broadcast media. A system according to any one of claims 1 to 5, wherein one of said information providing means is a beacon. 4. The position information identifier providing system according to any one of claims 1 to 3, wherein said information providing means and said position information identifier information providing means provide respective information using different media. 8. The position information identifier providing system according to any one of claims 1 to 7, wherein the position information identifier information providing means receives the request by the cellular phone from the receiving device and provides the position information identifier information. A delivery method for transferring information of a location information identifier to a receiving device including at least one of a database of location information identifiers and a database of a digital map, Transmits the information of the location information identifier and coordinate string information including the nodes and interpolation points constituting the location information identifier to a receiving device, The reception device performs a map matching to determine the location on the digital map corresponding to the location information identifier. 10. The method of claim 9, wherein additional information is transmitted to the receiving apparatus together with the coordinate string information, and the receiving apparatus reduces the candidate point obtained by map matching using the additional information. . And generating and transmitting location information identifier transmission information including information of the location information identifier and coordinate string information of the nodes and interpolation points constituting the location information identifier. A reception device including at least one of a database of location information identifiers and a database of digital maps, and receiving information using the location information identifiers to display a location on a digital map corresponding to the location information identifiers. Receiving coordinate column information of the node and the interpolation point constituting the location information identifier and location information identifier information, and performing map matching using the coordinate string information to determine the location on the digital map of the location information identifier. Receiving device characterized in.